diff --git a/bsd-user/sparc/syscall.h b/bsd-user/sparc/syscall.h
new file mode 100644
index 0000000000..5a9bb7e546
--- /dev/null
+++ b/bsd-user/sparc/syscall.h
@@ -0,0 +1,9 @@
+struct target_pt_regs {
+	abi_ulong psr;
+	abi_ulong pc;
+	abi_ulong npc;
+	abi_ulong y;
+	abi_ulong u_regs[16];
+};
+
+#define UNAME_MACHINE "sun4"
diff --git a/bsd-user/sparc/target_signal.h b/bsd-user/sparc/target_signal.h
new file mode 100644
index 0000000000..5b2abba40f
--- /dev/null
+++ b/bsd-user/sparc/target_signal.h
@@ -0,0 +1,27 @@
+#ifndef TARGET_SIGNAL_H
+#define TARGET_SIGNAL_H
+
+#include "cpu.h"
+
+/* this struct defines a stack used during syscall handling */
+
+typedef struct target_sigaltstack {
+	abi_ulong ss_sp;
+	abi_long ss_flags;
+	abi_ulong ss_size;
+} target_stack_t;
+
+
+#ifndef UREG_I6
+#define UREG_I6        6
+#endif
+#ifndef UREG_FP
+#define UREG_FP        UREG_I6
+#endif
+
+static inline abi_ulong get_sp_from_cpustate(CPUSPARCState *state)
+{
+    return state->regwptr[UREG_FP];
+}
+
+#endif /* TARGET_SIGNAL_H */